Bumped build_packager script memory limit (ubccr#118)

* Bumped build_packager memory limit

- When executing a local deploy ( as opposed to pulling down the source from a
  git repo ) this script consistently runs out of memory. Bumping the limit to
  256M alleviates this issue.

* Removed Memory Limit for build_package.php script

- Updated per code review comment by @jtpalmer

open_xdmod/build_scripts/build_package.php

@@ -8,6 +8,8 @@
 
 require_once __DIR__ . '/../../configuration/linker.php';
 
+ini_set('memory_limit', -1);
+
 use CCR\Log;
 use OpenXdmod\Build\Packager;